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Diagnoses at Age Four by Cluster
| Cluster | Diagnoses | ||||
|---|---|---|---|---|---|
| Autistic Disorder (AD) | PDD-NOS | No Diagnosis | Developmental Delay (DD) | Developmental Language Delay (DLD) | |
| Cluster 1 (n=15) | 0 | 6 (40%) | 5 (33.3%) | 3 (20%) | 1 (6.7%) |
| Cluster 2 (n=38) | 19 (50%) | 15 (39.5%) | 1 (2.6%) | 2 (5.3%) | 1 (2.6%) |
| Cluster 3 (n=5) | 3 (60%) | 1 (20%) | 0 | 1 (20%) | 0 |
